(541132) Leleākūhonua

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Asteroid
(541132) Leleākūhonua
Schematic representation of the orbit compared to Sedna
Schematic representation of the orbit compared to Sedna
Properties of the orbit ( animation )
Orbit type TNO
Major semi-axis approx. 1100  AU
eccentricity 0.94
Perihelion - aphelion 65 AU - approx. 2000 AU
Inclination of the orbit plane 11.66 °
Sidereal period approx. 34,000 a
Physical Properties
Medium diameter 300 km
Absolute brightness 5.3 mag
history
Explorer Mauna Kea-UH / Tholen NEO Follow-Up (Subaru)
Date of discovery October 13, 2015
Another name (541132) 2015 TG 387
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

(541132) Leleākūhonua , provisional name (541132) 2015 TG 387 , is a planetoid that was discovered on October 13, 2015 at Mauna Kea-UH / Tholen NEO Follow-Up (Subaru) and belongs to the group of trans-Neptunian objects . The asteroid orbit the sun in a highly eccentric orbit with an orbital period of a few tens of thousands of years. The eccentricity of its orbit is 0.94, with this 11.66 ° inclined to the ecliptic . With an absolute brightness of 5.3 mag, it is just a candidate for dwarf planets . He also had the unofficial nickname "The Goblin" for TG.

Its discovery was published on October 1, 2018, and it was numbered on October 10, 2019.

The name was given in June 2020. Leleākūhonua is a form of life that occurs in Kumulipo , a Hawaiian song of creation. The name compares the highly eccentric orbit with the flight of migratory birds and evokes a longing for proximity to the earth.


Trans-Neptunian objects on the edge of the Kuiper belt with perihelia q> 47 AU
object q
(AU)		 a
(AU)		 T
( a )		 e i
(°)		 ω
(°)		 H
(likes)
2012 VP 113 80.39 258.27 4.151 0.69 24.1 293.5 4.0
(90377) Sedna 76.26 484.52 10,665 0.84 11.9 311.4 1.3
(541132) Leleākūhonua 65.04 1031.49 33,128 0.94 11.7 118.0 5.5
2014 FZ 71 55.88 75.76 659 0.26 25.5 244.5 6.9
2015 RG 301 52.05 54.04 397 0.04 10.2 287.4 8.2
2014 FC 72 51.66 75.75 659 0.32 29.9 33.3 4.7
2018 GT 15 51.54 57.58 437 0.10 26.0 357.3 7.5
2004 XR 190 51.11 57.26 433 0.11 46.8 285.6 4.3
2015 FJ 345 50.69 62.88 499 0.19 35.0 77.4 7.9
2014 ST 373 50.19 104.56 1,069 0.52 43.2 297.1 5.4
2013 SY 99 50.02 693.86 18,277 0.93 4.2 32.1 6.7
2015 KQ 174 49.31 55.40 412 0.11 24.3 294.0 7.3
2010 GB 174 48.75 350.59 6,565 0.86 21.6 347.4 6.5
2014 SR 349 47.69 302.23 5,254 0.84 18.0 340.9 6.7
(474640) 2004 VN 112 47.30 318.97 5,697 0.85 25.6 326.8 6.5

Web links

Commons : 2015 TG387  - Collection of Images, Videos and Audio Files

Individual evidence

  1. ↑ Minor Planet Center: MPC Database Search for 2015 TG387. October 13, 2015 ( minorplanetcenter.net ).
  2. ^ Scott Sheppard, Chadwick Trujillo, David Tholen, Nathan Kaib: A New High Perihelion Inner Oort Cloud Object. 2018, arxiv : 1810.00013 .
  3. ↑ List of objects with q> 47. Minor Planet Center (MPC) of the International Astronomical Union (IAU), accessed on June 13, 2020 .
  4. ↑ Chadwick A. Trujillo, Michael E. Brown: The Radial Distribution of the Kuiper Belt . In: The Astrophysical Journal Letters . Vol. 554, No. 1 , May 31, 2001, p. L95 , doi : 10.1086 / 320917 , bibcode : 2001ApJ ... 554L..95T (English).